Froth present in an arterial blood gas sample is indicative of:

Potential preanalytical sampling errors include:   Air bubbles in the sample   Venous admixture   Continued metabolism   Improper use of heparin

While do you initial ventilator check on a 6-year-old child you recognize that an infant sidestream capnography adapter was placed in the circuit. This would cause:

The ICU attending inserts a pulmonary artery catheter and you are provided with the following parameters:           PvO2:  25 mmHg           SvO2:   28%           SV:   25 ml

What is your interpretation of the ABG. Include acid-base and oxygenation status.

Which of the following features or characteristics apply to mainstream capnography?   The mainstream capnograph contains narrow tubing that can become occluded with mucus.   Mainstream capnography is considered less accurate.   The mainstream capnograph adds weight to the breathing circuit.   The mainstream capnograph is placed at the proximal end of the endotracheal tube.

An antibody screen is reactive at AHG phase of testing for all cells on a three-cell screen. The autocontrol is negative. What is a possible explanation for these results?

Screening cells, crossmatch, and patient autocontrol are positive in 37C and AHG phases but no reactions are noted at immediate spin. What is the most likely cause of these results?

An antibody detection and identification procedure revealed the presence of an alloantibody that is reactive at AHG. What is the first step in selecting units for cross-matching?

Use the dot product to determine whether the vectors are parallel, orthogonal, or neither.v = 2i + j,  w = i – 2j